Use of long chain alcohols, ketones and organic acids as tracers
US-2015376997-A1 · Dec 31, 2015 · US
Fluid viscosity control
US2016115377A1 · US · A1
| Field | Value |
|---|---|
| Publication number | US-2016115377-A1 |
| Application number | US-201414890544-A |
| Country | US |
| Kind code | A1 |
| Filing date | Jul 14, 2014 |
| Priority date | Jul 15, 2013 |
| Publication date | Apr 28, 2016 |
| Grant date | — |
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- Title
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Abstract
Official abstract text for this publication.
A method of treating a subterranean formation penetrated by a wellbore includes introducing a treatment fluid comprised at least a crosslinkable component, and a metal crosslinker to the subterranean formation; forming a crosslinked treatment fluid, and de-crosslinking bonds of the crosslinked treatment fluid by manipulating a pH of the treatment fluid with a pH triggering agent.
First claim
Opening claim text (preview).
What is claimed is: 1 . A method of treating a subterranean formation penetrated by a wellbore, the method comprising: introducing a treatment fluid comprised at least a crosslinkable component, and a metal crosslinker to the subterranean formation; forming a crosslinked treatment fluid, and de-crosslinking bonds of the crosslinked treatment fluid by manipulating a pH of the treatment fluid with a pH triggering agent. 2 . The method of claim 1 , wherein the pH triggering agent is present in the treatment fluid. 3 . The method of claim 1 , wherein the pH triggering agent is present in the subterranean formation prior to the introduction of the treatment fluid. 4 . The method of claim 1 , wherein the method further comprises a first pH triggering agent and a second pH triggering agent. 5 . The method of claim 4 , wherein the second pH triggering agent re-crosslinks the de-crosslinked fluid. 6 . The method of claim 1 , wherein pH triggering agent is a solid suspended in the treatment fluid. 7 . The method of claim 1 , wherein the pH triggering agent is selected from the group consisting of magnesium oxide, alkali carbonates, alkali bicarbonates, alkaline earth carbonate and alkaline earth bicarbonates. 8 . The method of claim 1 , wherein the pH triggering agent is a pH buffer. 9 . The method of claim 1 , wherein the pH triggering agent is selected from the group consisting of sodium hydroxide, sodium carbonate, sodium bicarbonate, hydrochloric acid and acetic acid. 10 . The method of claim 1 , wherein the pH triggering agent is encapsulated.
Assignees
Inventors
Classifications
Specific additives for general use in well-drilling compositions · CPC title
of natural origin, e.g. polysaccharides, cellulose · CPC title
characterised by their form or by the form of their components, e.g. encapsulated material (C09K8/70 takes precedence) · CPC title
- C09K8/887Primary
containing cross-linking agents · CPC title
containing cross-linking agents · CPC title
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Frequently asked questions
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- What does patent US2016115377A1 cover?
- A method of treating a subterranean formation penetrated by a wellbore includes introducing a treatment fluid comprised at least a crosslinkable component, and a metal crosslinker to the subterranean formation; forming a crosslinked treatment fluid, and de-crosslinking bonds of the crosslinked treatment fluid by manipulating a pH of the treatment fluid with a pH triggering agent.
- Who is the assignee on this patent?
- Schlumberger Technology Corp
- What technology area does this patent fall under?
- Primary CPC classification C09K8/887. Mapped technology areas include Chemistry & Metallurgy.
- When was this patent published?
- Publication date Thu Apr 28 2016 00:00:00 GMT+0000 (Coordinated Universal Time) (A1). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 8 related publications on this page (citations in our corpus or others sharing the same primary CPC).